Day 21/75: Practice: Binary search problems
75 Day DSA in Java Challenge
Today I focused on turning the review day into diagnosis instead of a loose pile of solved problems. The strongest checkpoints were classify misses into pattern, implementation, and time-management buckets, re-solve only representative failures instead of skimming everything again, and write down the trigger or invariant that should have surfaced earlier.
The mistake I wanted to avoid was counting exposure as mastery and moving on before the miss is explained. The day felt better once the invariant stayed visible and each update had one job.
The goal for tomorrow is simple: keep the rule clear enough that the next variation still feels related to the same idea. I also want to keep tracing tiny examples because they expose weak assumptions faster than large random tests. I also want to keep tracing tiny examples because they expose weak assumptions faster than large random tests.
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